Water intake (illustrative)
Rough liters per day from weight — adjust for climate and activity.
Not medical advice. Kidney disease, pregnancy, athletes, and medications change fluid needs — ask a clinician.
Body weight (kg)
Rule
35 ml / kg / day (common guideline)
30 ml / kg / day (lower)
40 ml / kg / day (higher activity)
0
Liters / day (approx)
0
Glasses (250 ml)